Improvement in pipe-cutters



UNITED STATES GEOBG MULLER, OF NEW YORK, N. Y.

IMPROVEMENT IN PIPE-CUTTERS.

Specification forming part of Letters Patent No. 184,652, dated November 21, 1876; application filed May 2, 1876.

To all whom it may concern:

Be it known that I, Gnone. MI'JLLER. of New York oity,-county and State of New York, have invented a new Improvement in Pipe-Gutters, which improvement is fully set forth in this specification, reference being bad to the accompanying drawing. 7

This invention has for its special object a new and useful method for cutting iron pipes with glass lining.

In my drawing, Figurel represents an open top View ofmy cutter. Fig. 2 illustrates a side view of the external appearance of said Fig. 1. Fig. 3 represents details of Fig. 1 after some parts are removed. The figures, 4, 5, 6, and 7, are detail drawings of Fig. 1, and will be described hereafter. Fig. 8 shows the groove cut in the iron pipe.

In my drawings, A represents an iron pipe with glass lining, to be parted. B, B, and B are dies with which I cut the iron pipe. 0 represents a feeding-cam with a number of teeth attached thereto, regulated by the pinion F F.

Figs. 4 and 5 show the arrangement in what manner the dies B, B, and B" are connected with the feeding-cam G.

D represents a die, on the end of which a diamond, E, is inserted, for the purpose of cutting the glass pipe-lining. G is a movable handle, screwed on the lever H, as seen in Fig. l. J is another handle, stationary, fastened to the frame-work S M, drilled out, as seen in Fig.1, to allow ample space for the movement of the lever 1-1. As seen in Fig. 3 of drawings, the lever H is fastened to the frame M through the pin K. L represents a movable ring, which, attached to the lever H, makes, through the latter, the movements as indicated by the arrows, Fig. 3, and, as the dies B, B, and B are fastened in the ring L, the same have to follow the same movements from the right to the left as are produced through the lever H.

N in Fig. 2 of drawing is a pipe fastened to the frame S, and serves as a guide for the pipe A. O and O in Fig. 2 represent collars, which can be taken out and replaced by others of such size as to correspond with the width of the respective pipe A. P in Fig. 2 is a movable ring, on which the pipe Ais screwed through Q. The screw R is for the purpose of holding the movable ring P and the guide N together.

In Fig. 6, B represents a die for the purpose of cutting a thread on the iron pipe A. Three dies of this construction are used, and

are worked in the same manner for a screw: plate as the above-described three dies B, B, and B, for cutting the pipe.

T in Fig. 8 shows the groove made by the dies, uncovering thus the glass lining, and making it fit for cutting with diamond or speed-wheel.

In the operation of my improved pipe-cutter 1 take a collar, 0, of such opening as to fit over the pipe A, Fig. 2, insert it in P and S, and, after the pipe A has been brought in its proper position, I fasten A, through screw Q, to the movable ring P. Then I bring the dies B, B, and B in their place, as represented in Fig. l, by turning the pinion F F. The pinion-wheel F engages with the'teeth of the feeding-cam O, which latter again produces a movement of the dies B B B toward the pipe A. Then I take hold of the handle J with my left hand, and, with the handle Gr in my right hand, I commence to make constant movements from the right to. the left. The edges of the dies B, B, and B are thus cutting the iron pipe, as described above. After said dies have made a groove of certain depth, it is necessary to regulate the position of the dies B, B, and B by turning the pinion F F.

Having thus finished in making a groove that has cut the iron pipe around the glass lining, I bring the diamond E in contact with the glass pipe. The knob D, Figs. 2 and 7 of drawings, regulates the position of said diamond E. By turning the whole cutter once around the pipe A the diamond E cuts the glass pipe.

Having thus described the nature of the said invention, and in what manner the same is to be performed, I declare that I claim as new and desire to secure by Letters Patent- The combination of the feeding-cam 0, dieholder M, and dies B B B with the die D, provided with diamond E, all operating as described, and for the uses and purposes set forth.

In testimony whereof I hereunto subscribe my name in the presence of two witnesses.

GEORG MULLER. Witnesses:

ERNEST ABSHAG-EN, Framers I. HOLLENROEGER.

PATENT QFFICE. f 

